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QxOrm
1.2.7
C++ Object Relational Mapping library
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00001 /**************************************************************************** 00002 ** 00003 ** http://www.qxorm.com/ 00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com) 00005 ** 00006 ** This file is part of the QxOrm library 00007 ** 00008 ** This software is provided 'as-is', without any express or implied 00009 ** warranty. In no event will the authors be held liable for any 00010 ** damages arising from the use of this software 00011 ** 00012 ** Commercial Usage 00013 ** Licensees holding valid commercial QxOrm licenses may use this file in 00014 ** accordance with the commercial license agreement provided with the 00015 ** Software or, alternatively, in accordance with the terms contained in 00016 ** a written agreement between you and Lionel Marty 00017 ** 00018 ** GNU General Public License Usage 00019 ** Alternatively, this file may be used under the terms of the GNU 00020 ** General Public License version 3.0 as published by the Free Software 00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the 00022 ** packaging of this file. Please review the following information to 00023 ** ensure the GNU General Public License version 3.0 requirements will be 00024 ** met : http://www.gnu.org/copyleft/gpl.html 00025 ** 00026 ** If you are unsure which license is appropriate for your use, or 00027 ** if you have questions regarding the use of this file, please contact : 00028 ** contact@qxorm.com 00029 ** 00030 ****************************************************************************/ 00031 00032 #ifndef _QX_ARCHIVE_WIDE_TRAITS_H_ 00033 #define _QX_ARCHIVE_WIDE_TRAITS_H_ 00034 00035 #ifdef _MSC_VER 00036 #pragma once 00037 #endif 00038 00046 #include <string> 00047 #include <iostream> 00048 #include <sstream> 00049 #include <fstream> 00050 00051 #include <boost/mpl/if.hpp> 00052 #include <boost/mpl/logical.hpp> 00053 00054 #include <QtCore/qstring.h> 00055 00056 #include <QxSerialize/boost/QxSerializeInclude.h> 00057 00058 namespace qx { 00059 namespace trait { 00060 00065 template <typename T> struct is_archive_wide { enum { value = false }; }; 00066 00067 #if _QX_SERIALIZE_WIDE_BINARY 00068 template <> struct is_archive_wide<boost::archive::binary_wiarchive> { enum { value = true }; }; 00069 template <> struct is_archive_wide<boost::archive::binary_woarchive> { enum { value = true }; }; 00070 #endif // _QX_SERIALIZE_WIDE_BINARY 00071 00072 #if _QX_SERIALIZE_WIDE_TEXT 00073 template <> struct is_archive_wide<boost::archive::text_wiarchive> { enum { value = true }; }; 00074 template <> struct is_archive_wide<boost::archive::text_woarchive> { enum { value = true }; }; 00075 #endif // _QX_SERIALIZE_WIDE_TEXT 00076 00077 #if _QX_SERIALIZE_WIDE_XML 00078 template <> struct is_archive_wide<boost::archive::xml_wiarchive> { enum { value = true }; }; 00079 template <> struct is_archive_wide<boost::archive::xml_woarchive> { enum { value = true }; }; 00080 #endif // _QX_SERIALIZE_WIDE_XML 00081 00082 template <typename T> 00083 class archive_wide_traits 00084 { 00085 00086 public: 00087 00088 enum { is_wide = qx::trait::is_archive_wide<T>::value }; 00089 00090 typedef typename boost::mpl::if_c<is_wide, wchar_t, char>::type type_char; 00091 typedef typename boost::mpl::if_c<is_wide, std::wstring, std::string>::type type_string; 00092 00093 typedef typename boost::mpl::if_c<is_wide, std::wistream, std::istream>::type type_istream; 00094 typedef typename boost::mpl::if_c<is_wide, std::wostream, std::ostream>::type type_ostream; 00095 00096 typedef typename boost::mpl::if_c<is_wide, std::wstringstream, std::stringstream>::type type_stringstream; 00097 typedef typename boost::mpl::if_c<is_wide, std::wistringstream, std::istringstream>::type type_istringstream; 00098 typedef typename boost::mpl::if_c<is_wide, std::wostringstream, std::ostringstream>::type type_ostringstream; 00099 00100 typedef typename boost::mpl::if_c<is_wide, std::wfstream, std::fstream>::type type_fstream; 00101 typedef typename boost::mpl::if_c<is_wide, std::wifstream, std::ifstream>::type type_ifstream; 00102 typedef typename boost::mpl::if_c<is_wide, std::wofstream, std::ofstream>::type type_ofstream; 00103 00104 static inline QString toQString(const type_string & str) { return cvtQString<is_wide, 0>::toQString(str); } 00105 static inline void fromQString(const QString & str, type_string & result) { cvtQString<is_wide, 0>::fromQString(str, result); } 00106 00107 static inline QByteArray toQByteArray(const type_string & str, type_string * owner) { return cvtQByteArray<is_wide, 0>::toQByteArray(str, owner); } 00108 static inline void fromQByteArray(const QByteArray & data, type_string & result) { cvtQByteArray<is_wide, 0>::fromQByteArray(data, result); } 00109 00110 private: 00111 00112 template <bool isWide /* = false */, int dummy> 00113 struct cvtQString 00114 { 00115 #ifndef QT_NO_STL 00116 static inline QString toQString(const std::string & str) { return QString::fromStdString(str); } 00117 static inline void fromQString(const QString & str, std::string & result) { result = str.toStdString(); } 00118 #else // QT_NO_STL 00119 static inline QString toQString(const std::string & str) { return QString::fromLatin1(str.data(), int(str.size())); } 00120 static inline void fromQString(const QString & str, std::string & result) { result = str.toLatin1().constData(); } 00121 #endif // QT_NO_STL 00122 }; 00123 00124 template <int dummy> 00125 struct cvtQString<true, dummy> 00126 { 00127 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00128 static inline QString toQString(const std::wstring & str) { return QString::fromStdWString(str); } 00129 static inline void fromQString(const QString & str, std::wstring & result) { result = str.toStdWString(); } 00130 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00131 static inline QString toQString(const std::wstring & str) { Q_UNUSED(str); qAssert(false); /* Need STL compatibility ! */ return QString(); } 00132 static inline void fromQString(const QString & str, std::wstring & result) { Q_UNUSED(str); Q_UNUSED(result); qAssert(false); /* Need STL compatibility ! */ } 00133 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00134 }; 00135 00136 template <bool isWide /* = false */, int dummy> 00137 struct cvtQByteArray 00138 { 00139 static inline QByteArray toQByteArray(const std::string & str, std::string * owner) 00140 { if (owner) { (* owner) = str; }; return (owner ? QByteArray::fromRawData(owner->data(), owner->size()) : QByteArray(str.data(), str.size())); } 00141 static inline void fromQByteArray(const QByteArray & data, std::string & result) 00142 { result.clear(); result.append(data.constData(), data.size()); } 00143 }; 00144 00145 template <int dummy> 00146 struct cvtQByteArray<true, dummy> 00147 { 00148 static inline QByteArray toQByteArray(const std::wstring & str, std::wstring * owner) 00149 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00150 { Q_UNUSED(owner); return QString::fromStdWString(str).toUtf8(); } 00151 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00152 { Q_UNUSED(owner); Q_UNUSED(str); qAssert(false); /* Need STL compatibility ! */ return QByteArray(); } 00153 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00154 00155 static inline void fromQByteArray(const QByteArray & data, std::wstring & result) 00156 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00157 { result = QString::fromUtf8(data.constData(), data.size()).toStdWString(); } 00158 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00159 { Q_UNUSED(data); Q_UNUSED(result); qAssert(false); /* Need STL compatibility ! */ } 00160 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR))) 00161 }; 00162 00163 }; 00164 00165 } // namespace trait 00166 } // namespace qx 00167 00168 #endif // _QX_ARCHIVE_WIDE_TRAITS_H_